1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Ber [7]
3 years ago
6

The relationship between the decay constant (λ) and the half-life (t1⁄2) is given by the equation t(1/2) = 0.693/λ. Use the equa

tion for N to derive this relationship.
Hint: when t = t(1/2), N/No = 0.5 (1 point)

A sample of carbon-14 initially consists of 5 × 1024 particles. Carbon-14 has a half-life of 5730 years.

a. What is the decay constant for carbon-14? (Answer in units of yr–1.) (1 point)
b. How many radioactive particles of the sample remain after 100 years? (1 point)
c. What percentage of the radioactive particles remains after 500 years? (1 point)
d. How many radioactive particles of the sample remain after 1000 years? (1 point)
e. How much time will it take for 50% of the particles to decay? (1 point)
f. How much time will it take for 99% of the particles to decay? (1 point)
g. How many half-lives will it take for 99% of the sample to decay? (1 point)
h. What is the initial decay rate of the sample? (Answer in decays/yr.) (1 point)
i. After 200 years, what is the decay rate of the sample? (1 point)
j. How long will it take for the decay rate to decrease to 1015 decays/year? (1 point)
k. How many half-lives have passed after the time you found in part (j)? (1 point)
Physics
1 answer:
pshichka [43]3 years ago
6 0

Answer: A: 70/2=35

B: 35/2=17

C: 17.5/2=8.75

D: 8.75 of C-14 will be left

E: 5,730 years

F: 5,631

Explanation:

that’s all I got, hope I helped kinda

You might be interested in
Puedo violar a mi hermana?
Trava [24]
Interesante muy interesante

Pero no que estás diciendo???
6 0
3 years ago
Which of the following best illustrates a pair of sentences that are joined by an understood relationship?
zubka84 [21]

Answer : Option C) Detective Smiley scanned the dim hallway. He pulled his pistol from its holster.

Explanation : Amongst the given other choices there seems to be no relationship between two consecutive sentences. The only sentence which seemed to have a connection between previous and later sentence was option C. Where it is clearly stated that the detective named as Smiley was walking through the hallway which was dimly lit. The second sentence has a co-relation to the previous one as it extends the sentence. Detective smiley then pulled out his pistol from his holster after walking through the hallway.

This confirms that the correct answer for this question is Option C.

8 0
3 years ago
Read 2 more answers
The distance between earth and moon is almost 384,400 km the distance can be written in scientific notation as a x 10b km where
UNO [17]
384,400 in scientific notation can be written as 3.844×10^5
3 0
4 years ago
A particle (q = +5.0 µC) is released from rest when it is 2.0 m from a charged particle which is held at
PilotLPTM [1.2K]
The answer to your question is A. Have a great day
3 0
3 years ago
There is no sound in the vaccuum of space. Why? Select all that apply
miss Akunina [59]
#1 and #3 are correct.

#3 is slightly goofy. 
The problem is not that there's no air to vibrate your eardrum. 
The problem with no air is that there's nothing to ever bring the sound
to your head, even if you're only a foot away from the source.  There
are just NO SOUND WAVES going on at all.
7 0
3 years ago
Other questions:
  • Which of the following is NOT an effective pre-exercise energizing snack?
    5·2 answers
  • What force causes the periodic motion of a pendulum?
    15·2 answers
  • Two 110 kg bumper cars are moving toward each other in opposite directions. Car A is moving at 8 m/s and Car Z at –10 m/s when t
    14·1 answer
  • Why aren't humans as evolved as we think we are?
    10·1 answer
  • One student argues that a satellite in orbit is in free fall because the satellite keeps falling toward Earth.
    11·1 answer
  • A 1.50 kg cart moves in a circular path of 1.30 m radius at a constant speed of 2.00 m/s. (a) Calculate the magnitude of the cen
    8·1 answer
  • State four components of a circuit
    13·1 answer
  • 2. A car with mass 2,500 kg is travelling at 15 m/s. What is the car's kinetic energy?
    12·1 answer
  • Health psychology focuses on
    9·1 answer
  • A huge block of stone has a mass of 650kg and gains 70000j of gpe. how high has it been raised? (g = 10m/s2 )
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!